import org.junit.Test;
import org.springframework.boot.test.context.SpringBootTest;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

@SpringBootTest
public class Lambda {
    @Test
    public void test() {
        List<Integer> arrayList = new ArrayList<>();
        arrayList.stream();
        Arrays.stream(new double[5]);
    }
}
